A groundbreaking study explored the connection between vitamin D and brain health. Researchers found that low levels of the essential vitamin increased dementia risk. Participants with 25 nmol/L (deficient) had 54% higher odds of dementia than those with 50 nmol/L (optimal). The study estimated that raising levels to 50 nmol/L could prevent up to 17% of dementia cases (Journal of Clinical Nutrition, 2022; nqac107).

Another study focused on supplementation of the vitamin. Researchers followed 12,388 dementia-free individuals with an average age of 71. Those taking vitamin D supplements stayed dementia-free longer. In the control group, 68.4% remained dementia-free for five years. Among supplement users, 83.6% did. Supplementation supported lowered dementia risk by 40%. Those with normal cognition saw a 56% risk reduction. Even those with mild cognitive impairment experienced a 33% lower risk (Alzheimer’s & Dementia: Diagnosis, Assessment & Disease Monitoring, March 2023; 15(1): e12404).

These studies highlight the importance of maintaining adequate levels of vitamin D. Sunlight provides a natural source, but diet matters too. Fatty fish like salmon, mackerel, and sardines contain high amounts. Egg yolks, fortified dairy, mushrooms, and cod liver oil also help boost intake. A well-balanced diet combined with outdoor activity can help support healthy levels. However, for individuals who have limited sun exposure or dietary intake, supplements may be beneficial. Regular testing can help monitor levels and guide supplementation needs.

Making mindful changes in daily life—getting outdoors, eating clean and organic when possible, and choosing quality supplements—may be a strong path forward. At Martindale’s Natural Market, we want to be your trusted source for supporting your health journey. Wherever that journey leads, we are here to walk beside you every step of the way.